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1 files changed, 45 insertions, 0 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/slime/ArrayValue.java b/vespajlib/src/main/java/com/yahoo/slime/ArrayValue.java
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index 00000000000..4e520cde3c4
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+++ b/vespajlib/src/main/java/com/yahoo/slime/ArrayValue.java
@@ -0,0 +1,45 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.slime;
+
+
+final class ArrayValue extends Value {
+
+    private int capacity = 16;
+    private int used = 0;
+    private Value[] values = new Value[capacity];
+    private final SymbolTable names;
+
+    public ArrayValue(SymbolTable names) { this.names = names; }
+    public final Type type() { return Type.ARRAY; }
+    public final int children() { return used; }
+    public final int entries() { return used; }
+    public final Value entry(int index) {
+        return (index < used) ? values[index] : NixValue.invalid();
+    }
+
+    public final void accept(Visitor v) { v.visitArray(this); }
+
+    public final void traverse(ArrayTraverser at) {
+        for (int i = 0; i < used; i++) {
+            at.entry(i, values[i]);
+        }
+    }
+
+    private void grow() {
+        Value[] v = values;
+        capacity = (capacity << 1);
+        values = new Value[capacity];
+        System.arraycopy(v, 0, values, 0, used);
+    }
+
+    protected final Value addLeaf(Value value) {
+        if (used == capacity) {
+            grow();
+        }
+        values[used++] = value;
+        return value;
+    }
+
+    public final Value addArray() { return addLeaf(new ArrayValue(names)); }
+    public final Value addObject() { return addLeaf(new ObjectValue(names)); }
+}